diff --git a/test/rplugin/python3/deoplete/test_filter.py b/test/rplugin/python3/deoplete/test_filter.py
index 18ac23da..e8b2ca4f 100644
--- a/test/rplugin/python3/deoplete/test_filter.py
+++ b/test/rplugin/python3/deoplete/test_filter.py
@@ -1,34 +1,34 @@
 import deoplete.util as util
 
 def test_fuzzy_escapse():
-    assert fuzzy_escape('foo', 0) == 'f[^f]*o[^o]*o[^o]*'
-    assert fuzzy_escape('foo', 1) == 'f[^f]*o[^o]*o[^o]*'
-    assert fuzzy_escape('Foo', 1) == 'F[^F]*[oO].*[oO].*'
+    assert util.fuzzy_escape('foo', 0) == 'f[^f]*o[^o]*o[^o]*'
+    assert util.fuzzy_escape('foo', 1) == 'f[^f]*o[^o]*o[^o]*'
+    assert util.fuzzy_escape('Foo', 1) == 'F[^F]*[oO].*[oO].*'
 
 def test_overlap_length():
-    assert overlap_length('foo bar', 'bar baz') == 3
-    assert overlap_length('foobar', 'barbaz') == 3
-    assert overlap_length('foob', 'baz') == 1
-    assert overlap_length('foobar', 'foobar') == 6
-    assert overlap_length('тест', 'ст') == len('ст')
+    assert util.overlap_length('foo bar', 'bar baz') == 3
+    assert util.overlap_length('foobar', 'barbaz') == 3
+    assert util.overlap_length('foob', 'baz') == 1
+    assert util.overlap_length('foobar', 'foobar') == 6
+    assert util.overlap_length('тест', 'ст') == len('ст')
 
 def test_charwidth():
-    assert charwidth('f') == 1
-    assert charwidth('あ') == 2
+    assert util.charwidth('f') == 1
+    assert util.charwidth('あ') == 2
 
 def test_strwidth():
-    assert strwidth('foo bar') == 7
-    assert strwidth('あいうえ') == 8
-    assert strwidth('fooあい') == 7
+    assert util.strwidth('foo bar') == 7
+    assert util.strwidth('あいうえ') == 8
+    assert util.strwidth('fooあい') == 7
 
 def test_truncate():
-    assert truncate('foo bar', 3) == 'foo'
-    assert truncate('fooあい', 5) == 'fooあ'
-    assert truncate('あいうえ', 4) == 'あい'
-    assert truncate('fooあい', 4) == 'foo'
+    assert util.truncate('foo bar', 3) == 'foo'
+    assert util.truncate('fooあい', 5) == 'fooあ'
+    assert util.truncate('あいうえ', 4) == 'あい'
+    assert util.truncate('fooあい', 4) == 'foo'
 
 def test_skipping():
-    assert truncate_skipping('foo bar', 3, '..', 3) == '..bar'
-    assert truncate_skipping('foo bar', 6, '..', 3) == 'f..bar'
-    assert truncate_skipping('fooあい', 5, '..', 3) == 'f..い'
-    assert truncate_skipping('あいうえ', 6, '..', 2) == 'あ..え'
+    assert util.truncate_skipping('foo bar', 3, '..', 3) == '..bar'
+    assert util.truncate_skipping('foo bar', 6, '..', 3) == 'f..bar'
+    assert util.truncate_skipping('fooあい', 5, '..', 3) == 'f..い'
+    assert util.truncate_skipping('あいうえ', 6, '..', 2) == 'あ..え'
diff --git a/test/rplugin/python3/deoplete/test_util.py b/test/rplugin/python3/deoplete/test_util.py
index bf579089..0fcb77b3 100644
--- a/test/rplugin/python3/deoplete/test_util.py
+++ b/test/rplugin/python3/deoplete/test_util.py
@@ -9,11 +9,11 @@ def test_pos():
 
 def test_custom():
     custom = {'_': {'mark': ''}, 'java': {'converters': []}}
-    assert get_custom(custom, 'java', 'mark', 'foobar') == ''
-    assert get_custom(custom, 'java', 'converters', 'foobar') == []
-    assert get_custom(custom, 'foo', 'mark', 'foobar') == ''
-    assert get_custom(custom, 'foo', 'converters', 'foobar') == 'foobar'
+    assert util.get_custom(custom, 'java', 'mark', 'foobar') == ''
+    assert util.get_custom(custom, 'java', 'converters', 'foobar') == []
+    assert util.get_custom(custom, 'foo', 'mark', 'foobar') == ''
+    assert util.get_custom(custom, 'foo', 'converters', 'foobar') == 'foobar'
 
 
 def test_globruntime():
-    assert globruntime('/usr', 'bin') == ['/usr/bin']
+    assert util.globruntime('/usr', 'bin') == ['/usr/bin']